On Aug. 19, Warbin fatally shot Manuel Adame, 57, using a Smith and Wesson rifle equipped with a scope, according to the indictment.

The shooting occurred at Moark egg farm, formerly owned by Jack DeCoster and now owned by Land O’Lakes. Adame had been a worker at the farm for several years, police said.

At the time of the shooting, a Moark spokeswoman said, according to police, the shot was fired by a pest control professional working at the facility under contract.

According to state police spokesman Stephen McCausland, that worker — Warbin — was shooting a .22-caliber rifle to kill rodents and stray chickens inside one of the farm’s chicken barns that was being cleaned out.

Adame died from a gunshot wound to the chest and neck, according to the Office of the Chief Medical Examiner in Maine.

Warbin is not an employee of Moark but was working at the farm under contract, according to a Moark spokeswoman.